Hacksaw.



Patented 0013.4, 1910.

J. T. NAGEY.

HACKSAW.

APPLICATION FILED NOV. 9, 1909.

UNITED STATES PATENT OFFICE.

' JOHN TQIFAGEY, OF SUPERIOR, WISCONSIN, ASSIG-NOR OF ONE-HALF T0 HENRYJ'.

NACEY, OF SUPERIOR, WISCONSIN.

HACKSAW.

v Specification of Letters Patent. Patented Oct, 4, 1910, Applicationfiled November 9, 1909. Serial No. 526,953. 7

To all whom it may concern:

Be it known that I, JOHN T. NAoEY, a citizen of the United States,residing at Superior, in the county of Douglas and State of Wisconsin,have invented certain new and useful Improvements in Hacksaws, of whichthe following is a specification.

The present invention relates to hack saws, and has for its object toprovide a saw of this character embodying novel features of constructionwhereby it can be used to advantage upon work such as would beinaccessible to an ordinary hack saw or a hammer and tool, and whichwill prove more effective in many instances where a hammer and tool isordinarily used.

A further object of the invention is the provision of a hack saw whichis simple and inexpensive in its construction and which comprises fewand durable parts such as will successfully withstand the wear and tearto which hack saws are subject.

With these and other objects in view the invention consists of certainnovel combinations and arrangements of the parts as will more fullyappear as the description proceeds, the novel features thereof beingpointed out in the appended claims. 7

For a full understanding of the invention, reference isto be had to thefollowing description and accompanying drawing in which:

Figure 1 is a side elevation of a hack saw constructed in accordancewith the invention, portions being broken away and shown in section.Fig.2 is a top plan view of the joint between the handle and the sawframe. Fig. 3 is a side elevation of a modified form of joint, portionsbeing broken away and shown in section, Fig. 4 is a detail perspectiveview of the pivot pin employed in .the modified form of joint. Fig. 5 isa transverse sectional view on the line 5'5 of Fig. l and Fig. isan-enlarged plan View of the stem to which the inner end of the sawblade is attached.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawing by the samereference characters.

Specifically describing the present embodiment of the invent1on, thenumeral 1 designates the main frame of the saw which is substantially .Ushaped and carries the saw blade 2. The outer end of this saw blade 2 isdetachably connected by means of a pin or rivet 3 to a stem 15 which hasa circular cross section and passes loosely through a correspondingopening in the outer arm of the frame 1, an angular or square head 16being formed at the extremity of the stem and fitting within acorresponding shoulder 6 at theouter end of the o ening 5. It will thusbe obvious that by tlghtening or loosening the thumb nut 6 the tensionin the saw blade 2 may be increased or decreased in the usual manner asdesired and the particular manner of mounting the stem 4 whereby thesame assumes an inclined position has the advantage of throwing thetoothed edge of the saw blade out beyond the extremity of the adjacentarm of the main frame 1, and of moving-the thumb nut 6 up into an out ofthe way position. When the saw blade 2. is arranged in the plane of themain frame 1 the various parts are assembled as indicated in Fig. 1, butunder some conditions it is found desirable to turn the saw bladethrough an angle of 90degrees and lock itin this positionatsubstantially right angles to the plane of the saw frame. In order toaccomplish this result, the two stems 4 and 15 are removed "from theiropenings and -re laced therein with the recess in which it fits to ockthe 4, it is necessary to provide the stem with 10 some joint such asindicated at 17, so that when the saw blade is turned into-a position atright angles to the main frame the outer end of the stem 4 can turnabout the joint 17 and assume-a position in the general direction of thesaw blade, thereliy preventing the flexingof the blade which .wouldotherwise take place.

Projecting from one end of the saw frame 1 is, a longltudinall disposedextension 7 the-"extremity of w ich is formed with a "substantially.circular head 8 the peripher of which is formed with the teeth a handle9 has one end thereof bifurcated to receive this head; '8 and ispivotally con- 'nected thereto by means of the pin 10, such any angle tothe main saw frame l'as rea construction admitting of the handle beingswung either up or down into any desirable angle with the main sawframe. A

shoulder 11 is provided at the pivot end of this handle 9 and passingthrough this shoulder is a set screw 12 which is designed to engage theteeth 8 to lock the handle in an adjusted position. It will thus beobvious that the handle may be held rigidly at connected to theextension 7 by means of a removable pivot pin 10 so as to be readilydetached therefrom should such become desirable. The pivot opening inthe bifurcated end of the handle 9 is formed with the notches 14 whilethe pivot opening in the head'8 is formed with the notch 13 which isnormally out of alinement with the notches 14, and the pivot pin 10 isprovided at its opposite ends with the laterally projecting lugs 10.When the handle 9 is swung downwardly into such a position that thenotches 13 and 14 register with each other, the pin 10 may be insertedinto position, the lugs passing freely through the notches. When thehandle 9 is then swung upwardly to throw the notches 13 and 14 out ofregistry, the lugs 10 project upon opposite sides of the head 8 and holdthe pivot pin 10 securely in position. Owing to the fact that the handle9 is ordinarily locked in an adjusted position by means of the set screw12, it is prevented from accidentally turning into such a position aswould cause the notches 13 vand 14 to register and permit the pivot pin'to drop out of position.

Having thus described the invention, what I Iclaim as new and desire tosecure by Letters Patent is:

1. In a hack saw, the combination of a saw frame, a saw carried by thesaw frame, an extension projecting from the saw frame and terminating ina toothed head having a pivot opening therein, a handle alsoprovidedwith a pivot opening, a removable pivot pin adapted to be receivedwithin the before mentioned openings and constructed to have aninterlocking connection with the extension and the handle, and a setscrew carried by the handle and engaging the toothed head for lockingthe handle in an adjusted position.

2.. In a hack saw, the combination of a saw frame, a saw carried by thesaw frame, an extension projecting from the saw frame and terminating ina toothed head having a pivot opening therein which is in communicationwith aznotch, a handle formed with a bifurcated end embracing thetoothed head and provided with pivot openings communieatin with notches,the-said notches of the handle and head normally being out of registrywith each other, a pivot pin adapted to pass through the beforementioned pivot openings and provided at its ends with lugs adapted topass through the notches when the handle is turned to throw the notchesinto registry, but engaging the toothed head to hold the pivot pinagainst displacement when the notches are not in registr and means. forlocking the handle in an a justed position. i

In testimon whereof I afiix my signature in presence 0 two witnesses.

' JOHN T. NACEY. Witnesses:

W. E. PIGKERING,

L. C. GRAHAM.

